Dell PowerVault MD3260i - Manual (Page 186)

One technique for naming the snapshot (legacy) virtual disk and the snapshot (legacy) repository virtual disk is to add a
hyphenated suffix to the original base virtual disk name. The suffix distinguishes between the snapshot (legacy) virtual
disk and the snapshot (legacy) repository virtual disk. For example, if you have a base virtual disk with a name of
Engineering Data, the snapshot (legacy) virtual disk can have a name of Engineering Data-S1, and the snapshot (legacy)
repository virtual disk can have a name of EngineeringData- R1.
If you do not choose a name for either the snapshot (legacy) virtual disk or the snapshot (legacy) repository virtual disk,
the MD storage management software creates a default name by using the base virtual disk name. An example of the
snapshot (legacy) virtual disk name that the RAID controller modules might create is, if the base virtual disk name is aaa
and does not have a snapshot (legacy) virtual disk, the default snapshot (legacy) virtual disk name is aaa – 1. If the base
virtual disk already has
n – 1 number of snapshot (legacy) virtual disks, the default name is aaa – n . An example of the
snapshot (legacy) repository virtual disk name that the RAID controller module might create is, if the base virtual disk
name is aaa and does not have a snapshot (legacy) repository virtual disk, the default snapshot (legacy) repository
virtual disk name is aaa – R1. If the base virtual disk already has
n – 1 number of snapshot (legacy) repository virtual
disks, the default name is aaa – R n .
If you do not specify the unconfigured space or free space, the snapshot (legacy) repository virtual disk is placed in the
same disk group as the base virtual disk. If the disk group where the base virtual disk resides does not have enough
space, this command fails.
Enclosure Loss Protection
When you assign the physical disks, if you set the enclosureLossProtect parameter to TRUE and have selected
more than one physical disk from any one enclosure, the storage array returns an error. If you set the
enclosureLossProtect parameter to FALSE, the storage array performs operations, but the disk group that you
create might not have enclosure loss protection.
When the RAID controller module firmware assigns the physical disks, if you set the enclosureLossProtect
parameter to TRUE, the storage array returns an error if the RAID controller module firmware cannot provide physical
disks that result in the new disk group having enclosure loss protection. If you set the enclosureLossProtect
parameter to FALSE, the storage array performs the operation even if it means the disk group might not have enclosure
loss protection.
Scheduling Snapshots (Legacy)
You can use the enableSchedule and the schedule parameters to schedule automatic snapshots (legacy).
Automatic snapshots (legacy) can be scheduled daily, weekly, or monthly (by day or by date). The enableSchedule
parameter turns on or off the ability to schedule snapshots (legacy). When you enable scheduling, you use the
schedule parameter to define when you want the snapshots (legacy) to occur.
This list explains how to use the options for the schedule parameter:
immediate As soon as you enter the command, a snapshot (legacy) virtual disk is created and a copyon-
write operation begins.
startDate A specific date on which you want to create a snapshot (legacy) virtual disk and perform a
copy-on-write operation. The format for entering the date is MM:DD:YY. If you do not provide
a start date, the current date is used. An example of this option is startDate=06:27:11.
scheduleDay A day of the week on which you want to create a snapshot (legacy) virtual disk and perform a
copy-on-write operation. The values that you can enter are: monday, tuesday,
wednesday, thursday, friday, saturday, sunday, and all. For example:
scheduleDay=wednesday.
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